Folding drawing-knife handle.



No. 851,604. PATENTED APR. 23, 1907-. G. H. MOGARTY & P. A. WOOSTBR.

FOLDING DRAWING KNIFE HANDLE.

APPLICATION FILED JAN. 7, 1907.

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UNTTED STATES PATENT OlEiETUE.

CHARLES H. MoCARTY AND FREDERICK A. W'OOSTER, O1 YOUNGSTOWN, OHIO,ASSIGNORS TO THE RELIANCE EDGE TOOL COMPANY, OF Y(.)U=.\'GS- TOWN, OHIO,A C()RPOR.AI.ION OF OHlO.

FOLDING DRAWING-KNIFE HANDLE.

Specification of Letters Patent.

Patented April 23, 1907'.

Application filed January '7, 1907- Serial No. 351,193.

Be it known that we, CHARLES ll. Me- CARTY and FREDERICK A. Woos'rnn,citizens of the United States, residing at Youngs town, in the county ofMahoning and State of Ohio, have invented certain new and useful 1Improvements in' Folding Drawing-Knife ilandles, of which the followingis a specili a l tron. j o This invention relates to the subject ofwoodworking tools, and has special reference to certain new andpractical improvements in that type of tools known as drawing knives.

To this end, the invention primarily has in I5 view the equipment of adrawing knife blade with folding handles capable of adjustment to aplurality of positions. In this connection the invention contemplates aconstruction wherein the handles of the knife are capable of beingfolded inwardly to a position entirely out of the way directly over thecut ting edge of the knife blade thereby permitting the knife to behandled with perfect safety when not in use, and also placed in a smallcompass in the tool kit or chest without danger of injuring the cuttingedge. Also the construction claimed admits of the handles being set inthe customary positions at sub-, stantially right angles to the line ofthe blade, and furthermore in positions substantially in a line with theblade, thereby giving the workman a wide range of adjustment and makingit possible to set the handles in positions best suited for specialkinds of work.

Another object of the invention is to pro vide a folding handleequipment for drawing knife blades which embodies in its constructionsecure and rigid locking means for locking and bracing the handles ineach .of their several set positions. A special object in this relationis to provide locking means for the handles Which effect a triangular orthreecornered bracing principle thus giving great strength and rigidityand making it impossible for the handles to slip in relation to theknife while in the hands of the mechanic.

A further object is to provide sim do and convenient means forfacilitating the ocking and unlocking of the handles.

Vith these and other objects in view which will readily appear to thosefamiliar with the art, as the nature of the invention is betterunderstood, the same consists in the novel construction, combination andarrangement of parts hereinafter more fully described, illustrated andclaimed.

in the accompanying drawings, Figure 1, is a side elevation of a drawingknife having folding handles, and embodying the present invention; thehandles being shown folded inwardly over the blade. Fig. 2 is anenlarged detail elevation of one handle attachment showing the handlesetand locked in the customary working position, and showing in dottedlines the other three possible positions thereof. Fig. 3 is a similarview showing the handle locked in its inwardly folded position. Fig. lis a detail cross sectional view through the pivotjoint on the line 4 4of l ig. 3. Fig. 5 is a detail perspective view showing in separatedrelation the co-acting members of the combined pivot and locking jointfor each handle.

.liike references designate corresponding parts in the several figuresof the drawings.

in carrying out the invention, no change is involved in the conventionalform and use of the drawing knife blade, so for illustrative purposes,there is shown in the drawings a knife blade 1 of the usual design andprovided at its opposite ends with the projecting end blade shanks 2which provide the supporting and carrying members for the oppositehandles or hand grips 3.

The present invention contemplates connecting the handles 3 with theblade shanks 2 in such a manner as to permit of a folding adjustment ofthe handles into any of four positions, and rigidly locking the same insuch positions with facility and despatch. To secure these results, eachof the end blade shanks 2 is provided at its extrenuty with a knuckleear 4- preferably of a circular or disk form and having in its edge aplurality of keeper notches These notches are arranged at uniformdistances apart, so that the same may be utilized in pairs, or pairedrelation, and are preferably of a V-shapc to receive therein a pair ofcorrcspondingly shaped rigid lock-studs (3 projected laterally from oneside of a pivot head 7 formed at the extremity oi the handle shank 8carrying the handle 3. The pivot head 7 at one end of each handle shankS is also preferably of a circular or disk form so as to match thecorresponding knuckle ear 4t of the blade shank and complete therewith acombined pivot and locking joint for the holding adjustment andfastening of the handle.

The lock-studs 6 are preferably integral with the head 7 from which theyproject and are spaced apart the same distance as the spacing betweenthe series of notches 5 in the knuckle ear 4, so that in each of thefour possible positions of the handle, the said studs register in a pairof the notches thus securing a rigid holding and bracing at two points.In connection with said lock-studs, each pivot head. 7 is providedtherein with a. combined bearing and clearance slot 9. This slot is inthe form of an oblong hole e:.\' tending from the axial center of thehead 7 toward the edge opposite the lock-stud 6 and disposedtransversely of the head in a plane lying between the stud.

The slot 9 loosely receives therein the pivot screw 10 having a fastconnection at one end as at 1], in the center hole 12 of the knuckle ear4 and provided, at what may be termed its outer end, with a stop head 13for confining and. limiting the movement of a winged binding nut 14adapted to impinge against the side of the head 7 opposite the stud 6thereof.

From the construction described, it will be obvious that in order toswing the handle on its pivot, it is simply necessary to slightly loosenthe nut 1% so as to permit the head 7 to be shifted or slid laterally ina direction for carrying the studs 6 out of and clear from the notches5, the slot 9 permitting this action. hen this is done, the handle andhandle shank can be swung around to any of the four possible ositionsand then slid inward on the knuclile ear 4 to carry the studs 6 backinto a pair of the notches 5,

after which the nut 14 is tightened and the handle thereby rigidlylocked against any movement whatever.

When in any of its locked positions, it will be observed that the innerend of the slot 9 takes a bearing over the screw or 0st 10 therebyadding a third holding and racing point. This, in connection with thestuds 6, provides the triangular or three cornered bracing effect hereinreferred to.

A groove 15 in each of the handles permits them to be folded directlyover the edge of the blade.

Te claim 1. In a handle attachment for drawing knives, the blade shankhaving a knuckle ear provided in its edge with a plurality of angularkeeper notches, a folding handle shank provided. upon one face thereofwith a pair of offset angular lockstuds for engagement with saidnotches, said handle shank being further provided with a transverse slotlying in a plane between the studs, a pivot extend ing through said slotand permitting the handle shank to have a limited sliding movement onthe knuckle ear, and a binding nut arranged to hold the partsinterlocked.

2. 1n a handle attachment for drawing knives, the blade shank having aknuckle ear provided in its edge with a plurality of keeper notches, afolding handle shank provided upon one face thereof with a pair ofoffset lock-studs for engagement with said notches, said handle shankbeing further provided with a transverse slot lying in a plane betweenthe studs, a pivot extending through said slot andfperniitting thehandle shank to have a limited sliding movement on the knuckle ear, andlocking means.

In testimony whereof we hereunto affix our signatures in the presence oftwo witnesses.

CHARLES H. MCCARTY, FRED. A. WVOOSTER.

Witnesses ROY CLARK, KARL K. GRANGER.

